. Question 1.1. What is the first step in solving x2 + 2x + 3 = 0 by completing the square?. (Points : 1). Factor the left side.
2 answers:
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To find the discriminant of the following equation you have to remember tha main formula : ax^2 +bx + c and the one for discriminant is <span>b^2 -4ac
So, now we can solve it </span>
, so the discriminants is 0 :)
Hope it's clear!
So, now we can solve it </span>
Hope it's clear!
Answer:
Step-by-step explanation:
In this binomial probability case, the success is to pick a burrito with hot peppers, there are 7 out of 17, the probability is p=7/17=0.4118. The formula is
Where n is the number of burritos taken at random, k is the number of success (burrito with hot peppers), p is the probability of success. denotes the number of combinations and its formula is:
At least two burritos have hot peppers means having two or three burritos, these two cases are calculated and sum to get the probability of at least two burritos that have hot peppers.
Round to three decimal places: P=0.369